Induction motor with improved torque density

Apparatus, comprising:

• a stator defining a stator bore, the stator comprising
• a stator yoke having a stator yoke thickness, and
• stator teeth, the teeth having a common stator tooth width,
• wherein the ratio of stator yoke thickness to stator tooth width is at least 5:1;
• and
• a rotor mounted in the bore to rotate, the rotor comprising
• a rotor yoke having a rotor yoke thickness, and
• rotor teeth, the rotor teeth each having a rotor tooth width,
• wherein the ratio of rotor yoke thickness to rotor tooth width is at least 5:1.

Apparatus, comprising:

• a stator defining a stator bore, the stator comprising
• a stator yoke having a stator yoke thickness, and
• a plurality of stator teeth, the stator teeth having a stator tooth length,
• wherein the stator yoke thickness is greater than the stator tooth length;
• and
• a rotor mounted in the bore to rotate, the rotor comprising
• a rotor yoke having a rotor yoke thickness, and
• rotor teeth coupled to the yoke, the rotor teeth having a rotor tooth length,
• wherein the rotor yoke thickness is greater than the rotor tooth length,
• wherein a sum of the stator yoke thickness and the stator tooth length approximately equals a sum of the rotor yoke thickness and the rotor tooth length.